Card-board-cutting machine



(No Model.) 3 Sheets--Sheet- 1. R. T. SMITH.

CARD BOARD CUTTING MACHINE.

No. 434,958. Patented Aug. 26, 1890;

(No Model.) 3 Sheets-Sheet 2.

v R. T. SMITH. I CARD BOARD GUTTING MACHINE. No. 434,958. Patented Aug.26, 1890.

Ewe/LE7? 3 Sheets-Sheet 3,

R. T. SMITH. CARD BOARD CUTTING MAGHINE.

(No Model.)

No. 484,958. Patented Aug. 26, 1890.

XMUr/M' J.

UNITED STATES PATENT OFFIeE.

ROSIVELL T. SMITH, OF NASHUA, NEWV HAMPSHIRE.

CARD-BOARD-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 434,958, dated August26, 1890.

Application filed December 12,1889- Serial No. 333,569. (No model.)

To aZZ whom it may concern.-

Be it known that I, ROSWELL T. SMITH, a citizen of the United States,residing at Nashua, in the county of Hillsborough and State of NewHampshire, have invented a new and useful Card-Board-Cutting Machine, ofwhich the following is a specification.

My invention relates to improvements in machines for cutting card-boardfrom a web into sheets and taking each sheet and placing it when cutfrom the web.

Card-board is usually made in the web and rolled upon a core.

The object of my invention is by a continuous movement to unroll theweb, to take the curve out of the card-board, to present the same to theintermittent feeding device freed from tension and from curve, tofurnish an intermittent feed for the card-board, an intermittent cuttingdevice, and a device for taking the curved sheets, when out, anddepositing them in their proper place, making in all one continuousprocess from the web-roll to the package of sheets. I attain theseobjects by the mechanism illustrated in the accompanying drawings, inwhich Figure 1 is a side elevation. Fig. 2 is a plan. Fig. 3 is asection on line 0, showing the cutting device. Fig. 4. is a detail ofintermittent feed movements. Fig. 5 is a detail of crank-pin on line yy. Fig. 6 shows conepulley for varying the speed of continuous speed.Fig. 7 is a plan of sheet-delivery. Fig. 8 is an under side view of thesame. Fig. 9 is a side view of self-acting clamp. Fig. 10 is a view ofsame closed. Fig. 11 is a view of same open. Fig. 12 is a section of thesupply-rolls and rolls for removing the curve from the web on line or;as. Fig. let shows the right-hand end of Fig. 1, with parts removed,showing the cone-pulleys and their connecting-pulleys in position. Fig.15 a plan View of the balance-catch. Fig. 13 is an end view of Fig. 15.

Similarletters refer to similar parts th roughout the several views.

A represents the frame which holds the severrl working parts of mymachine.

B is the driving-shaft, which receives power from the pulley b.

C. is a shaft which, through power received from pulley c, revolves theroll 0. Geared to the roll 0" by the gear 0 c and revolving with c, isthe roll 0 This roll has a raised portion 0 preferably made of rubber.Each side'of the roll 0, I place the idle-rolls c 0 These idle-rollsrevolve through their contact with the cardboard, which is forced alongby rollers 0' c and are so placed as to compel the card-board to conformto the are of the roll 0 thereby removing from the card-board any strongtendency to curvein an opposite direction. These rolls (33115110 receivecontinuous motion from the pulley b on shaft B, or from the shaft whichimparts movement to said shaft B, in such a way as to secure awell-defined proportionate movement between B and O. This proportionatemovement will need to vary as longer or shorter sheets are to be cut,and the device for accomplishing this result I will describehereinafter.

Mounted upon the shaft B is crank-arm D. Extending from this arm is apin (Z'asupporting the pitman d. Connecting this pitman to theslide-rack d is the pin (1 The pin cl is so made as to be adjustableupon the crank-arm D, as to distance from the shaft B, by means of ascrew. In this wayImay vary the length of the crank-arm and of thepitman-stroke, giving more or less movement to the rack. The slide-rack(1 moves in the raceway d, and in its forward and backward movementsrevolves the gear-wheel (1 This gear turns loosely upon the shaft c,which supports and moves the roll d Firmly secured to the gear d is theratchwheel d and they always move together and are both loose upon theshaft.

Rigidly secured to the shaft cl is the dogarm at. (Z nominally impelledby a spring to engage the ratch d Lying above the roll (1 is the rollcl, which may be pressed down upon the roll (I? by screw c1 I It will beseen that when the slide-rack 1s impelled to the left the pinionrevolves Mounted upon this arm is the dog loosely upon itssupporting-shaft; but when i the slide-rack is impelled to the right thepinion becomes fixed upon the shaft and the rolls revolve with thepinion, and a sheet of card-board held between the rolls would be forcedforward to the extent of said revolution; and it is apparent that theextent of the revolution of the rolls will depend upon the length'of thecrank-arm, so that by varying the length of the crank-armthatis, thedistance betweenthe pin and shaft BI am able to control the length offeed of cardboard, giving me a perfectly reliable measur ing device. Inthe rear of these rolls I place the cutting device, which consists ofthe bedcutter E, which is a fixed blade. Above this blade, passing fromright to left and from left to right, is the revolving cutter 8. Thiscutter is held by and moves in and with the carriage e. Said carriageslides on ways 6 6 The revolving cutter is held against the fixedcutter-blade E by a spring,-which is not shown. The cutter revolves asit passes along the fixed blade, and its cutting-edge, in connectionwiththe fixed blade,acts like the two blades of the common scissors. Thiscutting device has been the subject of expired patents, and has been ingeneral use for many years. The carriage has usually been propelled byhand.

To impel the carriage to make its vibrating movements, Isecure to it thebelt e This belt I pass over the supporting idle-rolls e e e e and e",and I locate the rolls, as shown in Fig. 3, two at each end of theraceway e and one at e at a point near the fioor. The belt 6 is securedto the carriage only, and is en-- tirely free to move upon itssupporting-rolls to draw the carriage eitherto the right or left hand.By this arrangement of the rolls I secure a horizontal belt movement forsliding the carriage and a vertical movement for imparting power to thebelt. Upon the vertical portion of this belt I place hooks e 6 Theadvantage of securinga vertical vibration to the balance-catch f and ahorizontal movement to the carriage must be obvious, as the cam whichdrives the balance-catch works best upon a plane at right angles to theshaft which carries it, and said shaft would preferably be upon ahorizontal plane.

Upon the shaft B, I place the cam F, with its line of projection atrightangles with the center line of the crank-arm D, so that its outwardmovement will always be confined to one half of said crank-revolutionand its return movement will be made during the other half-revolution ofthe crank.

Around the cam F, I place the band f, and from this band I extend thepitman f. This pitman engages the lever f which is fulcrumed at fcausing the free end of the lever to vibrate vertically, both up anddown, at each revolution of the shaft B.

Upon the free end of the lever f I place the balance-catch f. This catchis preferably made of sheet-steel, bent, as shown in Figs. 3 and 13, andsupported by and free to turn upon pin f and held from being lifted fromsaid pin by rivet f As a guard to limit the revolvingmove ment of thecatch, I place the pin f extending from the lever f between the leavesof the catch, and limiting its revolving movement to the width ofits-opening. This catch f has vertical vibration between the verticalportions of the belte and as it risesit swings upon the pivot f andpasses the upperhook, which is e, as shown, upon the belt, and in itsdownward movement, having through gravity returned to its normalposition upon f it engages said hook and forces it down to the limit ofits own vibration. The drawing down of this hook draws the carriage e tothe left, bringing the hooks 6" up, meeting the catch at half of itsvibration, when the hook 6 would engage the catch but for the turning ofthe catch upon its side as far as the pin f will allow, as shown bydotted lines, Figs. 3 and 13. This turning of the catch is caused by theresistance to movement from the hook and belt. It isobvious that whenthe catch is turned, as indicated, the rising hook cannot engage thecatch, but will freely pass it.

In Fig. 13 I show the right-hand portion of belt e as farther removedfrom the pivot f than the right-hand portion of said belt. This isbecause the force required to move the belt tends to swing the lever fsomewhat from its central position between the belts, and because thebalance-catch is allowed by pin f to swing to the right, so as to secureand hold its connection with the belt and hook.

After the sheet of card-board is cut from the web by the cutter c itrests upon the table 6". In the rear of this tableI mountupon the frameA the brackets G, which support shafts g g. These shafts extend from oneside to the other of the frame and furnish support for the sprocket-wheels g, upon which run the sprocketchains g These chains support andmove the traveling crossbar 9 giving to it vibratory movement throughconnection of one of the chains with the sliding rack at g. V

Extending from side to side of the machine and resting upon the bracketsG are the supporting-bars g", to which the guide-bar g is secured at itsends. This slide-bar gfis upon its lower side rabbeted out, so as toform a channel g in connection with the adjustable plates which form theother side of thechannel and are made so that they may be adjusted toany desired length upon the slidebar The plates 9 are preferably thinplates of metal having a slot, (see Fig.9,) and which are held in placeby screws 9 These screws are at a less distance apart than the length ofsaid slot, so as to admit of longitudinal'adjustment to the plate. Iplace the two boxes 9 g made so that they canbe moved and fixed, uponthe slide-bar at any required distance, according to the length ofcard-board to be cut.

Upon the under side of the slide-bar g and below where it crosses thebar 9 I place the hinged bracket 9 having a fixed clamp g and hingedclamp-jaw 9 which is normally held open by a spring g Upon the back ofthe clam p-jaw g, I pivot the arm g so made that it may swing freelyupon a' plane at right angles to that on which the clamp-j aw moves.This arm projects n0r malty upon a plane vertical to that of the bars 9as shown in Fig. 2.

The box Fig. 8, is made with an outward bevel part Q20 and box g with aninward bevel g so arranged that as the traveling bar 9 brings the leverg against the box 9 and forces it by said contact from a vertical to ahorizontal position, as shown in Fig.

10, in this way the clamp being closed the end of g is swung around intothe groove y", where it remains until in its return movement it reachesthe incline 9 when it is thrown out of the groove by said incline,leaving the clamp free to open and release the sheet of card-board. Thedotted lines, Fig. 9, show the clamp partly closed. I preferably make gand 9 springs, so as to avoid adj ustment for card-board of differentthicknesses.

.Fig. 8 shows the under side of Fig. 7 and the projection of box g whichtrips the lever g". Theincline 9 the groove g and the releasing inclineg are shown therein.

The connection by which the sprocket-chain is secured to the slide-rackat g is adjustable, so as to accommodate any requirement as to sizes ofcard-board to be cut.

I call attention to the fact that by revolv ing the screw (1 and slidingthe block d, I can lengthen or shorten the distance the slide-rack (1will travel, and consequently am able to adapt it to the length of thesheet of card-board cut.

To feed the card-board to the cutting device,I use two setsof rolls. Thefirst, on shaft 0, are continuous in their movement; the second,

on shaft (1, are intermittent, feeding the cardboard during one-half ofthe revolution of the shaft 13 and during the remainder of saidrevolution remaining stationary. Consequently if the rolls are timedright as to speed the cardboard will feed through the two sets of rollsat the same rate; but as it is desirable to-vary the length ofcard-board it becomes necessary to vary the speed of theconstantly-running set of rolls. To this end I place upon the ceilingabove the machine two coneshafts. Upon one of these shaftsI place thecone-pulley b and the pulley b Upon the other shaft I place the cone 0and pulley mi. I arrange the cones upon the shafts in such a way thatthe base of each cone shall come in line with the apex of that of itsfellow. I connect the two cones by a belt in the usual way, and the beltmay be slid from one end of the cones by hand orby any convenientdevice. I connect the pulley b with the pulley b by belt, and alsopulley c wlth the pulley c by belt. It is evident that by revolving b, Irevolve c, and that the relative speed between I) and 0 will depend uponthe location of the belt b upon the cones.

To operate my machine, I place a roll of card-board at the right hand ofFig. 1 and pass the end of it between the roll 0 and c c 0 Fig. 2,taking the card-board from below instead of the top of the roll. I thenre volve the rolls 0 and 0 until I pass through them enough of thecard-board toreach the other set of rolls d and d, and also an amount ofslack that will reach nearly to the floor? I allow this slack in thecardboard to prevent the probability of the intermittentrolls gettingshort of a supply of card-board to out before an attendant would noticethat the feed of the forward rolls was not sufiicient. This passing ofthe card-board through the first set of rolls bends it in a directionopposite to its curve upon the roll, and leaves it with little, if any,tendency to curve.

Having secured the passage of sufficient card-board through the firstset of rolls, I pass its end between the second or intermittent set ofrolls. When the machine 1S ready for work, apply power to thedrivingwheel I), which revolves the shaft B, the crank-arm D, andthrough the pitman (1' slides the rack d to the right hand and revolvestherolls d through connection of the gear (1 ratch d dog d and the arm dwh ch is rigid upon the shaft (1 This action feeds the card-boardforward to the full extent of the right-hand movement of the slide-rack,

. which will continue until the 'pitman and crank-arm are parallel tothe slide-rack, at which time the cam F will be at its highest movement,and consequently the catch f will reach its greatest elevation. It willbe observed that I have given a definite length to the card-board sofed, andthat each repetition of the same will give a feed to thecardboard of exactly the same length as the first, making an exactmeasuring-machine. After the crank-arm has left its horizontal positionthe slide-rack begins to move to the left hand, the gear and ratch areleft free to revolve upon the shaft d, and during the entire left-handmovement of the slide-rack the feed-rolls remain inactive, the cam Fbegins its downward stroke at the same time the rack begins its lefthandmovement, and consequently the catch f 4 moves downward and engages thehook upon the belt e which is uppermost, forcesit down,and draws thecutter 6, so as to cut the card-board projecting beyondthe lower cutter.The same left-hand movement of the feedrack, by its connection with thesprocket-chain 9 brings the clamping device to the rightand causes it tograsp the sheet as soon as it is cut, and when the process of feedingthe sheet is repeated the right-hand movement of the rack forces theclamp holding the sheet to the left, where at the limitof said movementthe clamp is opened and the sheet deposited. In this way I am able tocut sheets of card-board with great accuracy and rapidity.

I call attention to the fact that but asmall central portion of therolls d and 0 pass upon the web to feed it. This is becauseif the ICOIIO

bearing was wide it would be impossible to edge of card-board as itcomes from the Web is usually fuller than the central portion, making itdesirable to feed it by its more perfect or central portion. Thiselement is necessary to the successful working of my machine.

Having described my invention, I claim 1. In acard-board-cuttingmachine, in combination, an intermittent feeding device consisting oftwo rolls having limited contact in their central portion, and impelledto action by the movement ofarack when moving in one direction and freefrom action upon the return movement of the said rack, and a cuttingdevice consisting of a cutter impelled to motion in two directions by acam, lever, and be1t-connection between the lever and the cutter, saidcutter having a fixed and a revolving blade, being impelled to bothmovements through action of the cam-1e ver in itsv movement in onedirection, said lever carrying a rocking catch adapted to formconnections between the lever and belt, substantially as described.

2. In a cardboard-cutting machine, the combination, with a cuttingdevice consisting of a fixed and a movable blade, of an intermittentfeeding device consisting of two rolls having limited contact in thecentral portion of the web, a toothed gear and ratch loosely.

mounted upon the shaft of one of the rolls, an arm rigidly fixed uponsaid roller-shaft and adapted to support a dog which may engage the saidratch and control its action in one direction, a rack-bar which shallengage the toothed gear upon the roller-shaft, a pit man givingvibratory action to the rack-bar, and a crank-arm to impel the pitman,substantially as described.

3. In a card-board-cutting machine, the combination, with a cuttingdevice consisting of a fixed and a movable blade, of two rolls havinglimited contact in the central portion of the web, a toothed gear andratch loosely mounted upon the shaft of one of the rolls, an arm rigidlyfixed upon said roller-shaft and adapted to support a d'og which may engage the said ratch and control its action in one direction, a rack-barwhich shall engage the tooth-gear upon the roller-shaft, a pitman givingvibratory action to the rack, a crankarm impelling the pitman, and aconstant feeding device for the web, consisting of two rollers havinglimited contact in their central portion, substantially as described.

4. In a card-board-cutting machine, the combination, with a cuttingdevice consisting of a fixed and a movable blade, of two rolls havinglimited contact in the central portion of the web, a toothed gear andratch loosely mounted upon the shaft of one of the rolls, an arm rigidlyfixed upon said roller-shaft and adaptedto support a dog which mayengage the said ratch and control its action in one direction, arack-bar which shall engage the tooth-gear upon the roller-shaft, apitman giving vibratory action to the rack, a crankarm impelling thepitman, a constant feeding device for the web, consisting of two rollershaving limited contact in their central portion, and the device fortaking the curve out of the card-board, consisting-of the two feedrolls,which constitute the constant-feed device, and one or more supplementaryrolls placed in such relation to one of said constant-feed rolls as tocompel the card-board to conform to the arc of said roll, therebyreversing the curve left in the card-board when taken from a roll andleaving it essentially free from curve, substantially as described.

5. In a card-board-cutting machine, the combination, with a cuttingdevice consisting of a fixed blade and a rotary cutter brought intoaction in two directions by a cam-impelled lever throughbelt-connections between the lever and the cutter, said cutter beingdrawn to both movements through action .of the cam-lever in itsmovements in one direction, the connection between the'lever and beltbeing formed by a balance-catch, of two rollers having limitedconnection in the central portion of the Web, a toothed gear and ratchloosely mounted upon the shaft of one of the rolls, an arm fixed uponsaid rollershaft and adapted to support a dog which may engage the saidratch and control its action in one direction, a rack-bar which shallengage the toothed gear upon the roller-shaft, a pitman giving vibratoryaction to the rack, and a crank-arm impelling the pitman, substantiallyas described.

6. In a card-board-cutting machine, the combination, with a cuttingdevice consisting of a fixed blade and rotary cutter brought into actionin two directions by a cam-impelled lever through belt-connectionbetween the lever and the cutter, said cutter being drawn to bothmovements through action of the camlever in its movements in onedirection, of two rollers having limited connection in the centralportion of the web, a toothed gear and ratch loosely mounted upon theshaft of one of the rolls, an armfixed upon said roller-shaft andadapted to support a dog which may engage the said ratch and control itsaction in one direction, a rack-bar which shall engage the toothed gearupon the roller shaft, a pitman giving vibratory action to the rack, acrank-arm impelling the pitman, and a device consisting of areciprocating clamp for taking and depositing the sheet when out fromthe web, said clamp having a yielding or spring finger for grasping thesheet when cut, and to release it whenit is brought to its proper place,substantially as described.

ROSWELL '1. SMITH. Attest:

J 0s. 0. WHEELER, WM. 11. FLINN.

